Ribbon movement for type-writing machines.



R. TURNER. RIBBON MOVEMENT E08 TYPE WBITINGHACHINES.

(Application filed Sept. 19, 1898,;

(No llndel.)

' Patented Sept. l2, I899.

2 Sheets-Sheet l,

WITNESSES: M BY INVENTOR ji o eri" izrner ATTORNEYS,

R. TURNER.

RIBBON MOVEMENT FOB TYPE WRITING MACHINES.

(Application filed Sept. 19, 1898.;

no. 632,767. Patented Sept. l2, I899.

2 Sheets-Sheet 2,

(No Model.)

INVENTOR. iim epfyzme ATTORNEYS WITNESSES seiner crosses, or DES MOINES. IOWA WBBGN MOVEMENT li-"GR TYF=WRlTiNG M AGl-HNES;

smiciisdoetrzon forming partof Letters-Petent No. 'es2,7e7. dated sept ember ists; Application filed seems? to, 1m. Serial No. 691,344. (so model,

To (Milli/1 7mm it may concern.-

I I Be it known'thst 1, ROBERT TURNBlIt Of Des Iowa, have invented new'and useful Improve ments inBibbon Movements for Type-Writ ing Machines, of which the following, taken. in connection wit-lithe accompanying drawings, is e'fuli, clear and exact description.

My invention relates to type-writing ins chines, and particularly to mechanisms for feeding the lEIklDg-IlbbOB lengthwise and widthwise intermittently or simultaneously. My obgect is to produce a feed mechanism for importing a, compound movement to the inking-ribbon, thedriving power being supplied from the spring-wheel te -revolve a spiral com, a rack-oer reciproosted vertically thereby, e pinion-driven by said reek-her, and e gear-toothed ribbon-spool shaft reciprocated lengthwise by said mechenism'com-. inned with e ratchet upon said shaft having teeth on both faces and swinging pawls en'- geging with said rstchete to revolve said spoolsheii coincidentlywith its lengthwise movements in either direction' The ribbon-spool being mounted upon said shaft the ribbon is moved widthwise first in one direction and then in the opposite direction in substentie ly econtinuons manner, only halting for the reas shown, sotheteach forms a segment of a vessel of movement, and at the same time moving 01 being fed widthwise hitermittentlyim cident to the intermittent movement of the IlbbOll-fiQUOl es the carriege is being fed to the leit in printing, stopping the widthwise feed, 1 whenever seid forward movement of the car siege end spring-wheel stops, remaining statiohary during the backward movementof the i carriage and spring-wheel, no matter what the position of the cam they he,end stopping the iehgthwise feed ofthe ribbon Whenever the widtbwiee feed stops. The double cent is mounted loosely upon thespring-wheel shaft, end it slip-ratchet mechanism is provided whereby the cam is revolved while said shaft is driven in one directionend remains steftionery at ell other times.

f it is constructed as ioilows, reference being held to the eccompenyicgdrewiugs, inwhich- Figure l is on end elevation of the freinecaf e type-writing machine, parts being broken ewe-y to show interior members of the ribbon .mechenisin in elevation. Fig. 2 is stop plan of the ribbon mechanism, the frame beiog cut- .ofi" inya horizontal-plane. Fig; is zm' eh MOH1=3S,1H the county ofP'olk, iii-the Sgt-ate of larged detail ofjthe geared ribbotl-spool'shhft' and'the pinion by-which it. is driven. Fig. 4i-

is a detail in: 1 01) plan of the cein', the rack-- bar, pinion driven by it, end; driving gear, the *spool s'haft heingbrokeu cit. A represents the frame of v e type-writing machine of the type-of the welll nown Jew'et-t or Duplex machinemend 2, representsihe im pressioniplsten, its carriage being omittedes not a part of thisinventionp Upon the frame is e suitable-bearing 3,"i-n whiche; vertical shaft 4 is suitably jourtialed,upon which and is connected tothe cerriitgeby any suitable ordinary means; This sheft'is-provided iiponitslower end with a transverse tongue as at 9, into asuiteble' support -The lower end of this sleeve is providedwith inclined.

pally-inclined camways-lZ 13, the upper and an ordinary spring-wheel 5'i's suitably seclired 6, radial or otherwise; which freely enters a:

ratchet-teeth- 10, adapted to engege uwith like .retchet-teeth-upon the hub of the cam-cyllower ends of which intersect substantially'" spiral on opposite sides of said cylinder. -A

' byseid shaftis shifted longitudinally,together with the ribbon-spool 21 thereomend this imports a widthwise movement to the-ribbon across the printing-point,' whereby the entire width of the ribbon is utilized. A'disk'22 is secured upon the 'frontend of each spoolshaft, being provided with ratchet-teeth upon each face, and 23 are suitable swinging pawls alternately engaging with said ratchets to in;

termitt-ently and step by step revolve the spool-shaftsand the spools thereon and impart it steprhy-step intermittent lengthwise feed to the ribbon si mnltnnigun's with the stepby-step intermitteut w-idlhivisel'eoil thereof.- Inasmuch as these pawls eF'the sal ne and operate in precisely the same way, as they have been nsedgfor several years past upon the J ewett orDuplex machines aforesaid they are not described;iii-detail.v

' It will be -.refadily-understood that'the rota tion of the springwheel to impel the carriage forward in printing will transmit the power to shift the ribbon widthwisestop by step'coincident with the intermittent rotation there-- of, that the lifting of the rock-bar incident to one eamway. will shift the ribbon-shafts,

spools, and ribbon forward, and its lowering incident to the other camway will reverse the movements of said shafts, spools,and ribbon, and that while one pawl andratchet will simultaneously with said forward widthwise movomentef its spool-shaft revolve that shaft to feed the ribbon lengthwise so when the lengthwise movement of said spool-sl1aft is reversed the other pawl and ratehet upon this shaft will revolve it and also feed the ribbon in the same direction, the lengthwise and widthwise feeds being simultaneous. Ono pair of these feed-pawls is thrown out of engagement with their ratchet-disk to pernrit the ribbonto be unwound from the spool uponthat spool-shaft. The reversal'of movement of the spring-wheel incident tothe throwing hack of the carriage to start a new line of print on uses the ratchet-teeth upon the'sleeve to slip over those upon the cam-cylinder without actuating said cylinder, and consequentlystops the feed of the ribbon. r

Having described my invention, what. I

claim, and desire to secure by Letters Patent,

1. The combination with a ribbon-spool shaft provided withgear-teoth and a spool thereon, of a cam, a rack-bar actuated thereby, a pinion driven by. said rack-ln'tr, a gear drivenwith said'pin'ion and engaging with said spool-shaft to shift it longitudinally, and means to drive said cam. i

2. The combination with a cam-propelled rack-bar, and a shaft driven by said rack-liar,-

of a pair of spool-shafts, caohprovidedwith gear-teeth, and gears upon the first-men ti oned shaft engaging with the respective. spool shafts to sim ultaneonsly shift then longiti dinally and means to drive said a-1n;

'13. The 'zombination with a cylinder pro videll with intersecting spiral enn'lwnys and means to rotate it, of a rack-bar engaging with said camways alternately and recipro gear on the first-mentioned shaft engaging therewith, wherebysaid spool-shaft is"re cip-' roeated longitudinally.

cam driven thereby and provided with opporack-bar reeiprocated by said cam'ways, of a shaft driven, by said rack-bar, a gear on said shaft, a spool-shaft'provided with gear-teeth, whereby it is reeiproeated longitudinally by said gear, and a ribbon-spool upon said spoolshaft.

5.- The combination with a spring-wheel, a cam driven thereby and'provided with oppo sitely-arranged intersecting eaniways, and a rack-bar r'eeiproealod by said cnmways, of a shaft driven. bylsaid rack-bar, a gear on said shaft, a spool-shaft provided with gem-teeth said gear, a ribbon-spool upon said shaft, a disk having ratchet-teeth on said spool-shaft, and inea-ns to revolve said spool-shaft simultaneously with its lengthwise movement.

- 6. The combination witharibbon-spooland a reciproeatory shaft therefor provided with gear-teeth, of a gear directly engaging with .saidspool-shaft and its gear-teeth, and means to drive said gear to bodily shift said shaft and-spool-length'wise.

I gear-teeth, of a gear engaging-with said spoolsliaft and its gear-teeth; and means to drive said gearintermittently in opposite directions whereby said spool shaft is rcciprocated lengthwise iii-its bearings.

- In witness whereof I have .handthis-fith day of September, 1893. 4

4. The combination with a spring-wheel,'a'

'sitely-arranged intersecting eainways, and aherounto set my.

spool shaft provided with gear-teeth,-.and a whereby it is reeiprocated longitudinally by 7. The combinationwith a ribbon-spool, and a rotatable shaft therefor provided with I Witnesses: v ShCu-asnnml,

, Gnonem "Wm'rE, 

